Citizen Science: Testing the Fairness of US State Quarters
|The three possible results of flipping a quarter: tails, edge, heads.|
You would probably expect that if you flip a quarter many times it should land heads up just about as often as it lands tails up. In that case, the coin would be considered "fair." But if one or more of the newly issued quarters isn't fair, it could have implications for all sorts of things from letting a coin flip make major life decisions for you, to determining whether you're favorite Pop Warner football team will be better able to beat the spread (note: see above notes) if they happen know a quarter from Nevada, just to randomly pick a state, will more frequently come up heads during the opening coin toss.
What better way to scientifically test the fairness of commemorative US state quarters than enlisting the millions of Physics Buzz readers in a grassroots experiment? So help us out by flipping some quarters and reporting the results in our survey form below.
You may have noticed that we included a nod to a quarter's third stable orientation on a flat surface - in addition to ending heads up or tails up, it can potentially wind up standing on edge. Although the local potential minimum is much shallower, it's still entirely possible. We don't expect many quarters to stand on edge, of course.
In case you're interested in sharing this experiment with one of your friends who may also own a quarter, you can send them this link to the survey. We'd appreciate the help. The more flips we get, the better our stats and conclusions.
Since I've learned how to manipulate the outcome of coin flips, I constructed a coin flipping device out of lego to eliminate any human variables. Loads of data incoming!
Wednesday, October 30, 2013 at 12:43 AM
My students are flipping coins and adding data for you. Is there anytime soon that we might see the results?
Friday, October 11, 2013 at 12:04 PM
Really interesting, thanks!
I think that you would be really interested in some recent research that I have come across about crowds and citizen science.
It’s called “The Theory of Crowd Capital” and you can download it here if you’re interested: http://papers.ssrn.com/sol3/papers.cfm?abstract_id=2193115
Really powerful stuff!
Saturday, August 3, 2013 at 7:20 PM